If the surface tension of a liquid is T, the gain in surface energy fo

1.	If the surface tension of a liquid is T, the gain in surface energy for an increase in liquid surface by A, is : (a) A2 T2 (b) A2 T (c) AT (d) AT−1
Answer» Correct option (c) AT Explanation: From the relation, the work done in increasing the surface area of a liquid by ΔA is given by W = TΔA Here : ΔA = A (at a certain temperature) So, gain in surface energy = work done W = TA = AT

If the surface tension of a liquid is T, the gain in surface energy for an increase in liquid surface by A, is : (a) A2 T2 (b) A2 T (c) AT (d) AT−1

Answer»

Correct option (c) AT

Explanation:

From the relation, the work done in increasing the surface area of a liquid by ΔA is given by

W = TΔA

Here : ΔA = A (at a certain temperature)

So, gain in surface energy

= work done W = TA = AT

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If the surface tension of a liquid is T, the gain in surface energy for an increase in liquid surface by A, is : (a) A2 T2 (b) A2 T (c) AT (d) AT−1

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